sept. i9io.] SUZUKI.— ON THE STRUCTURE AND AFFINITIES 189 



» 

 roundish parenchymatous cells. Sometimes we see a few stone 

 cells among the parenchymatous cells in the older leaves. The 

 stone cells of the leaves as well as of the cortex are roundish 

 and similar to those in the pith. In the present specimen they 

 appear solitarily here and there in the parenchyma, and some- 

 times two or three of them group together. 



The stone cells of the leaves, show lighter colour than those 

 of the cortex. All this palisade tissue and other parenchyma- 

 tous cells are traversed by fungal hyphas. Frequently we met 

 with fructifications of the fungus described below, forming large 

 roundish pouches generally under the stomates in the mesophyll. 



Resin Canals. When they are regularly arranged, we see 

 one central and the two lateral accessory ones, but frequently 

 their size, number and arrangement in the leaves seem rather 

 irregular, namely 1, 2, 3 or 4 resin canals are found, but 

 generally the central ones are the largest and longest, and lie 

 beneath the single vascular strand, whose wings of transfusion 

 tissue sometimes curve to enclose them partly. The epithelial 

 layer of the resin canals seem always one cell thick. 



Vascular Bundle. A single strand runs through the leaf a 

 little above the central portion ; but unfortunately, in the 

 specimens at hand, the bundles are generally crushed. The large 

 quantity of transfusion tissue is always found on both sides of 

 the vascular bundle as in Cryptomeriopsis antiqua. 



The decurrent bases of leaves without any constriction 

 show that the leaves themselves were not shed, as it is also the 

 case with Cryptomeria. This is also borne by the fact, that we 

 see the leaves still attached to the axis with two annual rings. 



Affinities. The single vascular bundle of the leaf without a 

 bundle sheath, the one-rowed separate bordered pits in the 

 tracheids, the occurrence of one central large resin canal and 

 two accessory lateral resin canals of the leaf, the large amount 

 of transfusion tissue, and general habit of the leaf, together 

 with the absence of normal resin canals and the lack of 

 traumatic resin canals in injured wood, the inclined long axis 

 of the orifice of bordered pits of ray cells, smaller parenchyma- 

 tous cells and the larger stone cells of pith, the breadth and 



